Double-reflecting lamp.



A. ROUSCH.

DOUBLE REFLECTING LAMP. APPLICATION FILED MAR. 6, l9l5.

l1 5 1 AQ 1 Patented Aug 2%, 1915.

AUGUST ROUSGBI, .OF IBEEKSKILL, NEW YDRK.

DOUBLE-REFLECTING' LAMP.

Specification of Letters Patent.

Patented ecuwfit, rare.

Application filed March 6, 1915. Serial No. 12,568.

To all whom it may concern Be it known that L'AUGUST RoUsci-I, a citizenof the United States, and resident of Peekskill, in the county ofWestchester and State of New York, have invented certain new and usefulImprovements in Double- Reflecting Lamps, of which the following is aspecification.

This invention relates to, particularly, the lighting of license numberson vehicles, whether on automobiles, or wagons, carriages, &c.; and itsobject is to combine in one lamp a signal light, and a light toilluminate the license number.

The object is attained by the means set forth in this specification andthe accompanying drawing, in which letters and numbers are alike inreferences to the several parts in the different figures.

Figure 1 is a transverse section in elevation through the lightingcenter of the lamp. Fig. 2 is an elevation of the rear of the centralportion of the lamp. Fig. 3 is a modification of form from that shown inthe other figures. Fig. a is a front elevation of the lamp, without theglass in the cone, and with one end of the horizontal reflector shown insection. Fig. 5 is a perspective view of the lamp showing one end of thecasing broken away.

In the perspective view, Fig. 5, it will be seen that the lamp consistsof a central conical portions, that constitutes a reflector, having atthe small end of the cone an electric bulb f. The reflector has a glassfront a. To this reflector is secured a rectangular casing 6 extendedupon each side of the cone and somewhat below the cone. Where thiscasing is attached to the cone, the body of the cone is cut away as at7), so as to constitute one chamber of the interior of the cone and ofthe casing.

Fig. 1 shows the'construction of the cone. Its front edge is formed intoa screw e, and a cap 03 screws upon it. The cap is cut away leaving onlythe threaded portion 0 and a flange h. This cap holds a glass 1; inplace. The small end of the cone is extended. in tubular form 0, andwithin the tube is inserted an electric lamp socket 9. The lamp socketcomprises several parts. A tube constitutes the receptacle for the lampbase f, and is partly filled with an insulation 10. .In the insulationis a fixed metal plug 11, perforated as at 13 to receive a connectingwire w, the wire being held by a screw 12. A movable plug 14: is keptthrust forward by a spring 15. A metallic part 16 in the lamp base makescontact with the movable plug 14:. The outer end of the insulation isshown in Fig. 2, showing that there are .two wire connectors. The socketis a well known form of lamp socket upon which no claim is made herein,except that it is suitable for the purpose, but not to the exclusion ofany suitable lamp socket.

The front of the casing Z) is at right angles to the horizontal centerof the lamp and cone reflector; but the rear side of the cas ing is atan obtuse angle with the front, forming a chamber wider at the bottomthan at the top, and both sides of the casing inter.

cept and throw rays from the lamp downward. The highest point ofintersection of the casing with the cone coincides with the horizontalcenter of the cone, or about that,

so that part of the lamp film will project rays of light to the extremeends and corners of the casing, thus making all parts of the interior ofthe casing reflective. The base of the cone, from the end of the lampsocket, finished with a parabolic curved bottom as t 2?.

The open bottom or the casing Z2 is provided with a groove 1, Figs. 1,e. and 5, for

a glassm, Figs. 1 and 4, to keep out dust and insects. As shown, slightkinks 7, as at 0 0 near the'edge of the casing, and flanges 2' 2' afforda groove into which to slide the glass. The casing is madeto admit theglass at one end, and a means for keeping it in place is shown in Fig.4;, comprising a screw r fast to the casing, a clamp a and a nut a", theclamp extending under the glass. be provided faces.

The lamp is shown in Fig. l as clamped to a license number plate 5, andit can be seen how the front of the casing "will inter cept light fromthe. lamp and reflect it downward upon the number plate, and that therear wall of the casing will cast downward rays that fall upon it, Also,that the cone and the casing reflect rays at right angles to each other.Thus, when used as a rear light, a red glass in the cone makes of thelamp a rear end danger signal, while at the same time a 'white lightwill be thrown upon the number plate If used as \a front light, theglass in the cone'would be an uncolored glass. For short journeys a fewdry batter with suitable reflecting sur The interior of the casing willfsions from the eone'have the with the cone to the vies would besufficient to operate the lamp,

for vehicles out for a long period a storage battery could be used,While with modern automobile equipment it beoomes simply an addition tothe outfit.

The lamp can be secured in juxtaposition with the number plate in anyconvenient manner.- Figs. 1 and 2' show a clamp 1 secured to the casingand provided "with screw holes 3 3for attaching the clamp to numberplate holding brackets, and also with slots 2 2 for a strap fastening;The clamp is held to the casing by means of a screw 7 and nut (5, madewith a hook 8 at the top, with the end adapted to be bent upon the plateas at 8' at the bottom.

In Fig 3 is shown :1 modification Oli the form of the horizontalreflector or easing.

Instead of rectangular extensions the extentops of the cuspoints ofintersection ends of the easing. Otherwise the casing is the same asshown in the other figures.

lng curved from the An object in extending: the "ear well of the ca inghigher than the m i wall Where the t oin the cone, is to mom an excestohold the glass and an elongated i-ectzingular casing" attuehul to thecone the space in the casing and in the cone united to form one lightingehnniber. the outlet from the elongated isin g provided with grooves for:1 glass :1 glass in the said grooves. a clamp vtor holding the glass inplace. and support ing; clumps attached to the ens-hug.

AIM HTS? ROUSUH.

Witnesses JAMES M IEIARIE M H a line

